Excarect

local tArgs = {...}
if #tArgs ~= 2 then
print("Usage: excarect <x> <y>")
return
end

while(true) do
for y=1,x<tonumber( tArgs[0] ) do
for x=1,x<tonumber( tArgs[1] ) do
if turtle.detect() then turtle.dig() end
turtle.forward()
end
if y % 2 then
turtle.turnRight()
turtle.forward()
turtle.turnRight()
else
turtle.turnLeft()
turtle.forward()
turtle.turnLeft()
end
end
end